Journal of Materials Science Materials in Engineering

Abstract Although Ni–Fe–Ga-based alloys have been widely studied for their functional properties, previous works have primarily focused on stoichiometric or near-stoichiometric compositions, particularly in the form of ribbons, thin films, or rapidly solidified materials. Ti addition to these alloys has been explored only rarely and with a limited focus on their properties. In this study, we inve…

Abstract Quarter-circular corner cracks are typical flaws in three-dimensional (3D) structures. For curved 3D cracks, the application of a plane-strain fracture criterion often leads to inaccurate fracture predictions. To enhance prediction accuracy, a 3D fracture assessment method incorporating an equivalent thickness model based on the T z factor is employed to evaluate the fracture strength of…

Abstract This study aims to perform in vitro experimental and 3D finite element method analysis (FEA) of the mechanical behavior of pure titanium and titanium alloys, which are frequently preferred in the human body, at different wear velocities and ambient conditions. Test specimens were subjected to different wear environments (distilled water, dry ambient) and wear velocity (1.2 Hz, 2.0 Hz) te…

Abstract Bio-mimetic surface texturing has gained significant interest in aerospace and marine applications in recent years. This paper aims at investigating the effect of pangolin scale-inspired biomimetic laser surface texturing (LST) on the tribological properties and corrosion behaviour of nickel aluminium bronze (NAB) substrates. Friction and wear performance of laser surface textures on NAB…

Abstract The development of wear-resistant materials is critical for researchers aiming to extend the life of sliding components employed in mechanical engineering fields by reducing friction-related energy losses. The motive of the study is to fabricate the hybrid composites of aluminium which include the reinforcements made of mullite (Mul), silicon carbide (SiC), and tungsten disulphide (WS 2 …

The ZnSeO3/ZnTeO3 nanocomposite is synthesized by hydrothermal process. It exhibits particles of spherical shape nearly like closely arranged small beads. The particle size is 108.9 nm, energy gap is 5.8 eV, urbach energy 0.420 eV and refractive index is 1.891. Infra red spectroscopy reveals characteristic vibrations of Zn–O and Zn-Se bonds. The sample exhibits superparamagnetism at 300K. Thermal…

In this paper, we report on the direct measurement of hydrogen flux from a machined car gear component immediately following carbonitriding treatment and prior to its welding to the gear train. Carbonitriding is a thermochemical process by which carbon and nitrogen are purposely introduced into the surface of steel components leading to an improvement of their wear and fatigue performance. Hydrog…

Abstract This study presents a comparative analysis of kinetic models to evaluate the thermal degradation of jackfruit peel in a nitrogen atmosphere. Thermogravimetric analysis was performed to examine the decomposition behavior of JFP, revealing three distinct stages: moisture evaporation (30–105 °C), active pyrolysis (105–380 °C) involving hemicellulose and cellulose degradation, and lignin dec…

Membrane gas separation has gained significant interest due to its compactness, high area-to-volume ratio, and numerous advantages over traditional gas separation processes such as cryogenic distillation and adsorption towers. Optimizing operating conditions, particularly temperature, is essential to enhance process performance, thereby increasing productivity and product purity. Polysulfone is w…

This experimental and theoretical study systematically investigates the structural, chemical, mechanical, and kinetic behavior of Tyranno fibers subjected to high-temperature exposure. Fibers were heat-treated in an argon atmosphere from 1200 °C to 1500 °C and characterized using FTIR, XRD, TGA, SEM, and mechanical testing. The experimental findings revealed a significant reduction in mechanical …

Utilization of industrial waste to produce geopolymer concrete is a good answer to minimize the carbon-dioxide( Co2) released from the traditional procedure of producing Ordinary Portland cement (OPC). This not only helps to mitigate the release of greenhouse gases, but also provides a sustainable method for managing industrial waste. For production of geopolymer concrete (GPC), ingredients such …

Superalloy is the only utilizable material for underground coal gasification channel joint. In this research, the high temperature gas flow erosion wear behavior of superalloy with strengthened layer by boronizing is systematically investigated, including microstructure and hardness. The results reflect that boronizing process can effectively strengthen the surface of superalloy. The high tempera…

Zinc oxide (ZnO) nanoparticles are widely explored for photocatalytic degradation of organic pollutants due to their high stability, low cost, and environmental compatibility. In this study, ZnO nanoparticles were synthesized through two green routes using saffron (Crocus sativus) floral extracts to evaluate the effect of extract type and synthesis method on the structural properties and photocat…

Solution combustion synthesis (SCS) is an effective and viable solvent assisted synthesis method for metal oxide nano materials such as magnesium oxide (MgO) and/or vanadium oxide supported on magnesium oxide (VOx/MgO). The method offers the advantage of being straight put in producing materials of desirable morphological and physicochemical properties due to varying fuels used in the synthetic p…

Cobalt nanoparticles with controlled morphology were synthesized via a tunable heating-rate approach and evaluated for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) electrocatalysis. Cyclic voltammetry studies revealed that the nanoparticles remain electrochemically stable up to –1.5 V, with well-defined cathodic and anodic redox peaks corresponding to the Co2⁺/Co redox co…

Diabase tailings–based geopolymers (DTG) were investigated through stepwise low-temperature activation at 100 °C, 200 °C, and 300 °C to assess their potential as sustainable, high toughness binders. However, the intrinsically low reactivity of diabase tailings, combined with the high energy demand required for conventional thermal activation, has posed a major barrier to their efficient large-sca…

The transformation of titania to its nanomaterial form has gained significant interest due to its superior properties that are viable for many applications. Herein, Titanium dioxide nanotubes (TNT) were synthesized using a hydrothermal method from Degussa P25 precursor. Sodium hydroxide base concentration was varied from 5.00 M to 12.50 M at 1.25 M increments to study its effect on titanium dioxi…